Paracypris ovidi Forel, 2020

Forel, Marie-Béatrice & Grădinaru, Eugen, 2020, Rhaetian (Late Triassic) ostracods (Crustacea, Ostracoda) from the offshore prolongation of the North Dobrogean Orogen into the Romanian Black Sea shelf, European Journal of Taxonomy 727, pp. 1-83 : 48-49

publication ID

https://doi.org/ 10.5852/ejt.2020.727.1183

publication LSID

lsid:zoobank.org:pub:85AF63D9-5E9E-4CE0-AEC6-6F7CC8C4D375

DOI

https://doi.org/10.5281/zenodo.4340742

persistent identifier

https://treatment.plazi.org/id/7DB2FA3F-A4F7-451A-ACC2-5D3D6199CADD

taxon LSID

lsid:zoobank.org:act:7DB2FA3F-A4F7-451A-ACC2-5D3D6199CADD

treatment provided by

Plazi

scientific name

Paracypris ovidi Forel
status

sp. nov.

Paracypris ovidi Forel View in CoL sp. nov.

urn:lsid:zoobank.org:act:7DB2FA3F-A4F7-451A-ACC2-5D3D6199CADD

Fig. 10 View Fig H–N

Diagnosis

A small ear-shaped species with conspicuous dorsal angulations and anterior maximum of curvature slightly below mid-height.

Etymology

In reference to the Latin poet Ovid (Publius Ovidius Naso) who died in exile on the Black Sea shore in Tomis, present-day Constanţa ( Romania).

Material examined

Holotype

ROMANIA • 1 complete carapace; Black Sea , Romanian Continental Shelf , borehole 817LV, sample CM31B; Rhaetian, Upper Triassic; MNHN.F. F63268 View Materials .

Paratypes

ROMANIA • 1 complete carapace; same collection data as for holotype; Rhaetian, Upper Triassic; MNHN.F. F63271 View Materials 1 complete carapace; same collection data as for holotype; Rhaetian, Upper Triassic; MNHN.F. F63269 View Materials .

Other material

ROMANIA • 1 complete carapace; same collection data as for holotype; Rhaetian, Upper Triassic; MNHN.F. F63270 View Materials 1 complete carapace; same collection data as for holotype; Rhaetian, Upper Triassic; MNHN.F. F63364 View Materials 1 complete carapace; same locality as for preceding but sample CM31C; Rhaetian, Upper Triassic; MNHN.F. F63272 View Materials 1 complete carapace; same locality as for preceding but sample CM31A; Rhaetian, Upper Triassic; MNHN.F. F63273 View Materials 11 complete carapaces, 2 broken carapaces; same locality as for preceding but samples CM31A, CM31B and CM31C; Rhaetian, Upper Triassic; MNHN.F. F63358 View Materials .

Dimensions

See Fig. 3H View Fig .

Description

Carapace small, ear-shaped, tapered posteriorly in lateral view, with H max at antero-dorsal angulation, L max slightly below mid-H and W max at mid-L; LV overlaps RV very thinly along DB, PDB and VB; dorsal margin distinctly tripartite with conspicuous angulations, more uniformly arched in small specimens; ADB, DB and PDB straight, PDB sometimes slightly convex; ADB and DB of similar length (±80% of L max), respectively gently sloping to AB and antero-dorsal angulation; PB short (± 20% of L max), inclined posteriorly with an angle of 45–55°; AB relatively large, with largely rounded AVB and maximum of convexity located slightly below mid-H; PB narrowly rounded, with maximum of curvature slightly above ventral margin; surface smooth; inner structures not visible.

Occurrence

Romanian Continental Shelf, Black Sea, Rhaetian, Upper Triassic (this paper).

Remarks

Paracypris ovidi sp. nov. is closely related to Pseudomacrocypris ? kerabani sp. nov. described below, from which it differs by having dorsal angulations more acute and AB angulation located slightly higher. Paracypris ovidi sp. nov. also displays a normal overlap of LV around RV, which excludes it from Pseudomacrocypris and relates it to Paracypris . Paracypris ovidi sp. nov. also differs from the widespread Jurassic P. redcarensis ( Blake, 1876) (e.g., Harloff & Jäger 1994; Boomer et al. 1998; Ainsworth & Boomer 2001; Honigstein et al. 2014) in being less tapered posteriorly, with a less rounded anterior margin and a less pronounced overlap.

The H/L diagram shown in Fig. 3H View Fig documents the occurrence of several ontogenetic stages, the delimitation of which is complicated. The holotype ( Fig. 10H View Fig ) and one of the paratypes ( Fig. 10I View Fig ) are among the largest specimens recorded. The ontogenetic development of Paracypris ovidi sp. nov. mainly consists in size increase and accentuation of dorsal angulations.

Kingdom

Animalia

Phylum

Arthropoda

Class

Ostracoda

Order

Podocopida

Family

Candonidae

Genus

Paracypris

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